[2013/05/23 11:59:51] #net-snmp <achan> hi, we have encountered issues with stale soft nfs mounts locking up the MIB for storage in SNMP. we are using NET-SNMP version 5.1.2. Anyone experience this before?
[2013/05/23 12:00:15] #net-snmp <achan> the rest of the snmpwalk works fine on that host. Just the storage part of the walk is failing
[2013/05/23 12:38:44] #net-snmp <rstory-work> achan: do you care about monitoring nfs mounts? i know more recent versions can ignore them.. not sure if 5.1 can..
[2013/05/23 12:39:21] #net-snmp <achan> yes we care about monitoring the nfs mounts on the servers
[2013/05/23 12:43:22] #net-snmp <rstory-work> the agent is single threaded, so if the os blocks trying to reach the nfs server, there's not anything we can do..
[2013/05/23 12:43:51] #net-snmp <rstory-work> maybe reducing nfs timeouts for the mounts might reduce the time it's blocked..
[2013/05/23 12:46:56] #net-snmp <rstory-work> hmm.. the only other thing i could think of would be to disable the storage mib in snmpd, and run a second copy of snmpd as a subagent with only the storage mib... that way the blocking would happen in the subagent and the master agent could continue processing requests...
[2013/05/23 12:47:46] #net-snmp <rstory-work> achan: i think you might have missed my last message: hmm.. the only other thing i could think of would be to disable the storage mib in snmpd, and run a second copy of snmpd as a subagent with only the storage mib... that way the blocking would happen in the subagent and the master agent could continue processing requests...
[2013/05/23 12:48:17] #net-snmp <achan> the rest of the agent is responding
[2013/05/23 12:49:10] #net-snmp <rstory-work> umm.. i don't see how it could if it's blocked on a stale nfs mount..
[2013/05/23 12:52:52] #net-snmp <achan> i have seen two symptoms. 1) entire snmpd agent is not working 2) only the storage part fails. I guess my next step is to compile the multiple datapoints (version of net-snmp, symptom, cause) and send it to Net-SNMP-Users